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  2. Right bundle branch block - Wikipedia

    en.wikipedia.org/wiki/Right_bundle_branch_block

    A right bundle branch block (RBBB) is a heart block in the right bundle branch of the electrical conduction system. [1] During a right bundle branch block, the right ventricle is not directly activated by impulses traveling through the right bundle branch. However, the left bundle branch still normally activates the left ventricle.

  3. Bundle branch block - Wikipedia

    en.wikipedia.org/wiki/Bundle_branch_block

    A right bundle branch block typically causes prolongation of the last part of the QRS complex and may shift the heart's electrical axis slightly to the right. The ECG will show a terminal R wave in lead V1 and a slurred S wave in lead I. Left bundle branch block widens the entire QRS, and in most cases shifts the heart's electrical axis to the ...

  4. Heart block - Wikipedia

    en.wikipedia.org/wiki/Heart_block

    Infra-Hisian blocks may occur at the left or right bundle branches ("bundle branch block") or the fascicles of the left bundle branch ("fascicular block" or "Hemiblock"). SA and AV node blocks are each divided into three degrees, with second-degree blocks being divided into two types (written either "type I or II" or "type 1 or 2").

  5. Wikipedia : Osmosis/Bundle Branch Block

    en.wikipedia.org/.../Bundle_Branch_Block

    So if the block happens on the right side, it’s referred to as a right bundle branch block. So with this type, the electrical signal starts at the SA node, contracts the atria, moves through the AV node, splits at the bundle of His, and then moves down the left bundle branch but is blocked on the right bundle branch.

  6. Bundle branches - Wikipedia

    en.wikipedia.org/wiki/Bundle_branches

    When a bundle branch or their fascicles becomes injured (by underlying heart disease, myocardial infarction, or cardiac surgery), it may cease to conduct electrical impulses appropriately, resulting in altered pathways for ventricular depolarization. This condition is known as a bundle branch block. [3]

  7. Intraventricular block - Wikipedia

    en.wikipedia.org/wiki/Intraventricular_block

    An intraventricular block is a heart conduction disorder — heart block of the ventricles of the heart. [1] An example is a right bundle branch block, right fascicular block, bifascicular block, trifascicular block. [2] [3]

  8. Bifascicular block - Wikipedia

    en.wikipedia.org/wiki/Bifascicular_block

    Bifascicular block is characterized by right bundle branch block with left anterior fascicular block, or right bundle branch block with left posterior fascicular block on electrocardiography. Complete heart block could be the cause of syncope that is otherwise unexplained if bifascicular block is seen on electrocardiography. [1]

  9. Trifascicular block - Wikipedia

    en.wikipedia.org/wiki/Trifascicular_block

    The most literal meaning of trifascicular block is complete heart block: all three fascicles are blocked. A second, and clinically distinct, definition of trifascicular block is a circumstance in which right bundle branch block (RBBB) and left bundle branch block occur in the same patient, but at distinct points in time.

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